Answer : The mass of water produced will be 32.78 grams.
Explanation : Given,
Mass of
= 21.9 g
Molar mass of
= 72.15 g/mole
Molar mass of
= 18 g/mole
First we have to calculate the moles of
.

Now we have to calculate the moles of
.
The balanced chemical reaction will be,

From the balanced reaction we conclude that
As, 1 mole of
react to give 6 moles of 
So, 0.3035 moles of
react to give
moles of 
Now we have to calculate the mass of
.


Therefore, the mass of water produced will be 32.78 grams.
The heat that creates this temperature change coming from change in the internal energy of the system as per as first law of thermodynamics.
<h3>What is Boyle's law ?</h3>
A law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature.
As we know, Boyle's law only works when the gas is kept at a constant temperature
Here,
When volume of gases decreased, it means work done has occurred on the system, so the work done is used for raising internal energy of the gas and the other is released as the thermal energy.
So,
According to 1st law of thermodynamics,
we know Q = ΔU + W i.e, change in internal energy and work done. So this is a reason. Changing temperature occurs.
Learn more about Internal enrgy here ;
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Answer:
You not alone lolI'm also tryna figure out the answer
Answer:

Explanation:
Hello,
In this case, the chemical reaction is:

Thus, we first identify the limiting reactant by computing the yielded moles of water by both of the reactants:

In such a way, since HBr yields less water than cadmium hydroxide, we infer that HBr is the limiting one, therefore, the yielded mass of water are:

Regards.
C because the sodium (cation) bonds with the sulphate (anion) and then chloride (anion) and hydrogen (acting as a cation) bond together